Patents Assigned to Fraisa SA
  • Patent number: 6086459
    Abstract: In a process for deburring edges on an object, for example the cutting edges (14) of a cutting tool (12), a fluid guided under high pressure through at least one nozzle (26) in the form of at least one fluid jet (28) is directed onto the edges with a speed sufficiently high to separate the burrs. A device for deburring the edges (14) of an object (12) with an axis of rotation (z) has a clamping means (16) for temporary clamping of the object (12) to be deburred and at least one fluid-carrying nozzle (26) arranged transverse to the axis of rotation (z) and aimed at the object (12), where the nozzles (26) and/or the clamping means (16) are designed to perform a rotational movement about the axis of rotation (z). Deburring is carried out carefully and without damaging or rounding the edges.
    Type: Grant
    Filed: April 7, 1999
    Date of Patent: July 11, 2000
    Assignee: Fraisa SA
    Inventor: Thomas Naegelin
  • Patent number: 6053670
    Abstract: In a modular system (10), with a holder part (12) for clamping in a spindle of a turning machine and a machining tool (14) attached interchangeably to this, the machining tool (14) has a hollow cylindrical shaft part (18) which overlaps a receiving mandrel (20) on the holder part (12) and is fixed to the holder part (12) by means of a screw device (28, 30) mounted on the holder part (12) and generating a tension or compression force via a tension or compression rod (22) running through the holder part (12) and the receiving mandrel (20). The end of the tension or compression rod (22) facing the machining tool (14) is expanded and under the effect of the tension or compression force leads to an expansion of the receiving mandrel (20) such that the peripheral surface (42) of the receiving mandrel (20) and the inner surface (44) of the shaft part (18) are clamped against each other to form a friction connection.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: April 25, 2000
    Assignee: Fraisa SA
    Inventor: Konrad Schmid
  • Patent number: D724126
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: March 10, 2015
    Assignee: Fraisa SA
    Inventor: Stefan Senn